152 "Journal of Covi^arafive Neurology and Psychology. 



Fig. 3. Zeiss, Ocular If, Objective 1/12. — Drawing of a small area from a 

 transverse section through the "operated" second cervical ganglion of a young 

 white rat five days after the operation. With the exception of one medium- 

 sized cell, all of the cells show more or less extensive chromatolysis. The 

 medium sized non-reacting cell is distinctively of the coarsely granular type. 

 The usual features of chromatolysis can be seen in the reacting cells. Notice 

 the extreme peripheral position of the nuclei of the small cells. 



Fig. 4. Zeiss, Ocular 4, Objective 1/12 — Drawings of a small area of a 

 section through the same ganglion as that represented in Fig. 2. It repre- 

 sents, the condition in the ganglion twenty days after the section of the nerve. 

 The most striking feature is that the large cells have almost regained their 

 normal appearance. The nuclei are centric and there is a large amount of 

 chromatic granules distributed in the normal manner throughout the pro- 

 toplasm. 



Fig. 5. — Showing a degenerated cell penetrated by proliferating cells from 

 the capsule, from the second cervical ganglion of a rat eight days after the 

 operation. 



Fig. G. — Showing a cell distended by a large vacuole, from the second cer- 

 vical ganglion of a rat seven days after the operation. 



